St. Peter Flag

St. Peter

County:
Fayette County
County Seat:
No
Area (mi²):
0.521
State:
Illinois

St. Peter is a village located in Fayette County, Illinois. St. Peter has a 2026 population of 308. St. Peter is currently declining at a rate of -0.65% annually and its population has decreased by -3.75% since the most recent census, which recorded a population of 320 in 2020.

The median household income in St. Peter is $63,500 with a poverty rate of 10.36%. The median age in St. Peter is 39.7 years: 35.8 years for males, and 45.3 years for females. For every 100 females there are 109.9 males.

308
Total Population
592
Density (mi²)
-2 -0.65%
Growth

St. Peter Population

St. Peter Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026308-2-0.65%
2025310-2-0.64%
2024312-1-0.32%
2023313-1-0.32%
2022314-5-1.57%
2021319-1-0.31%
202032000%
2019339-1-0.29%
2018340-2-0.58%
2017342-3-0.87%
2016345-4-1.15%
2015349-1-0.29%
2014350-2-0.57%
201335210.28%
2012351-2-0.57%
2011353-6-1.67%
201035300%

Median Age

Overall: 39.7 years
Female: 45.3 years
Male: 35.8 years

St. Peter Adults

There are 257 adults, (62 of whom are seniors) in St. Peter.

Sex Ratio

Female: 161 (47.6%)
Male: 177 (52.4%)

Demographics

The racial composition of St. Peter includes 98.22% White, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White33298.22%
Two or more races61.78%
Race
Population ↓
Percentage (of total)
White33298.22%
Two or more races61.78%

St. Peter Marital Status

Economics and Income Statistics

St. Peter 's average per capita income is $36,905. Household income levels show a median of $63,500. The poverty rate stands at 10.36%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$76,458-
Families$69,773$89,805
Households$63,500$74,827
Non Families$28,750$42,939

$36,905

Average Income

$63,500

Median Household Income

10.36%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)